Short answer: the Minirig 3 with subwoofer. It ranks #6 of 82 large speakers by sound quality, rated 4.6/5, at $260; the Marshall Kilburn II ranks #39, rated 3.8/5, and costs $279, so there is little reason to consider the other one.
The case for the Minirig 3 with subwoofer: Very balanced sound. The catch: Not stereo, app is buggy.
The case for the Marshall Kilburn II: 20W Class D amp + dual 8W tweeters. The tradeoff: Boosted upper bass, not very detailed, not as deep bass as competitors, upper mids peak.
Buy the Minirig 3 with subwoofer. It is rated higher for sound quality than the Marshall Kilburn II and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Battery life favors the Minirig 3 with subwoofer: rated for 30 hours against 20 hours for the Marshall Kilburn II.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Minirig 3 with subwoofer | Marshall Kilburn II | |
|---|---|---|
| Price | $260 | $279.00 |
| Ranked | #6 of 82 in Large Size Portable Bluetooth Speakers | #39 of 82 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Aux Latency | 1ms | - |
| Bass Extension (-10dB) | 47Hz | ~58Hz |
| Battery Life | 30 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| EQ | Yes | No |
| IP Rating | Splash resistant | IPX2 |
| Bluetooth Latency | 60ms | - |
| Maximum SPL | 103dB (measured by Alan Ross Reviews) | 102dB (Manufacturer specified) |
| Power Bank | No | No |
| Power Input | Proprietary USB cable | USB-C |
| Stereo | No | Yes |
| Omnidirectional | Pointing up | No |
| TWS | Yes (Bluetooth or cable) | Yes |
| Weight | 3.1 lbs (1.42 kg) | 5.5 lbs (2.49 kg) |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Party Mode | No | No |
| Bluetooth Version | 5.0 | 5.0 |
| Dimensions | 4” x 2.9” (101.6 x 73 mm) (diameter x height) | 9.6” x 6.4” x 5.5” (243 x 162 x 140 mm) |
| Drivers | 70mm custom driver | 1x 4” (102mm) woofer + 2x 20mm dome tweeters |
| Frequency Response | 60Hz - 18kHz (Manufacturer specified) | - |
| Amplifier Power | 40W | 36W |
| Digital Aux Input | No | No |
| Strap | - | Yes (built-in strap) |
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More worthwhile head-to-heads for Minirig 3 with subwoofer:
- JBL Xtreme 5 vs Minirig 3 with subwoofer
- Tribit Stormbox Lava vs Minirig 3 with subwoofer
- Brane X vs Minirig 3 with subwoofer
- Minirig 3 with subwoofer vs Minirig 4 with subwoofer
- Minirig 2 with subwoofer vs Minirig 3 with subwoofer
Prices on this page were last checked September 26, 2026 at 11:14 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Minirig 3 with subwoofer: $260 Minirigs eBay
Pros: Very balanced sound. Measured bass extension of 47Hz (-10dB).
Cons: Not stereo, app is buggy. Wireless TWS pairing is buggy. Not easy to carry on the go, no handle and there’s 2 pieces. Calls itself splash resistant but has no official water rating. A bit expensive. Has reliability issues more often than any other speaker
Full Minirig 3 with subwoofer review and specifications →
| Amplifier Power | 40W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Aux Latency | 1ms |
| Bass Extension (-10dB) | 47Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 60ms |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 4” x 2.9” (101.6 x 73 mm) (diameter x height) |
| Drivers | 70mm custom driver |
| EQ | Yes |
| Frequency Response | 60Hz - 18kHz (Manufacturer specified) |
| IP Rating | Splash resistant |
| Maximum SPL | 103dB (measured by Alan Ross Reviews) |
| Omnidirectional | Pointing up |
| Party Mode | No |
| Power Bank | No |
| Power Input | Proprietary USB cable |
| Stereo | No |
| TWS | Yes (Bluetooth or cable) |
| Weight | 3.1 lbs (1.42 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Tribit Stormbox Blast or two Motion Boom Pluses for best cheap boombox? More from alanrossreviews →
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- Alan Ross Reviews: Minirig mk3 2.2 (2x subwoofers) vs 2x Soundcore Motion Booms 🤑
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Marshall Kilburn II: $279.00 Amazon eBay
Pros: 20W Class D amp + dual 8W tweeters. 20+ hour battery with quick-charge (20 min charges 3 hours of play). Rugged design with leather handle and reinforced corners, IPX2 rated. Thrives with rock music. Bluetooth 5.0 with 30ft range. Measured bass extension of ~58Hz (-10dB).
Cons: Boosted upper bass, not very detailed, not as deep bass as competitors, upper mids peak. Very low IPX2 water rating. AC charging
Full Marshall Kilburn II review and specifications →
| Amplifier Power | 36W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~58Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.6” x 6.4” x 5.5” (243 x 162 x 140 mm) |
| Drivers | 1x 4” (102mm) woofer + 2x 20mm dome tweeters |
| EQ | No |
| IP Rating | IPX2 |
| Maximum SPL | 102dB (Manufacturer specified) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (built-in strap) |
| TWS | Yes |
| Weight | 5.5 lbs (2.49 kg) |
- Reviews, Comparisons and Sound Samples
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